diff --git a/tutorial-durable/15-map-coord.sh b/tutorial-durable/15-map-coord.sh
index a2b55b9..8c48e00 100755
--- a/tutorial-durable/15-map-coord.sh
+++ b/tutorial-durable/15-map-coord.sh
@@ -9,7 +9,7 @@
 # === get ===
 # /m·[1,2]	float32:6.28000020980835
 # /m·[9,9]	(nil)
-# === obj vs coord ===
+# === 命名成员 vs 坐标成员 ===
 # [0]	2
 # x	1
 # /end
@@ -32,8 +32,8 @@ $KV list /m· --kind --showext=false
 echo "=== get ==="
 $KV get '/m·[1,2]' '/m·[9,9]'
 
-echo "=== obj vs coord ==="
-$KV set /h· 'object:'
+echo "=== 命名成员 vs 坐标成员 ==="
+$KV set /h· 'map[0]:'   # 显式声明容器（memhead），并建 memindex；object kind 已移除
 $KV set /h·x 'int:1'
 $KV set '/h·[0]' 'int:2'
 $KV list /h· --kind=false --showext=false
diff --git a/tutorial-durable/16-geo-coord.sh b/tutorial-durable/16-geo-coord.sh
index c57cba3..96a40ac 100644
--- a/tutorial-durable/16-geo-coord.sh
+++ b/tutorial-durable/16-geo-coord.sh
@@ -14,6 +14,7 @@ KV="$HOME/.local/bin/kvspace"
 $KV deltree /geo/
 
 echo "=== geo list ==="
+$KV set /geo· 'map[0]:'   # 先声明容器（memhead），否则成员写被拒
 $KV set '/geo·[39.9,116.4]' 'string:Beijing'
 $KV set '/geo·[31.23,121.47]' 'string:Shanghai'
 $KV list /geo· --kind --showext=false
diff --git a/tutorial-durable/17-cp.sh b/tutorial-durable/17-cp.sh
index ec81720..d3f304f 100644
--- a/tutorial-durable/17-cp.sh
+++ b/tutorial-durable/17-cp.sh
@@ -33,7 +33,7 @@ $KV get /dst/one
 
 # cpdir 复制 · 成员容器（base + memindex + 成员）
 echo "=== cpdir memindex container ==="
-$KV set /p· index:
+$KV set /p· 'map[0]:'   # 容器值（memhead）+ memindex；index: 只建 memindex，成员写会被拒
 $KV set /p·x float:3.14
 $KV set /p·y int:42
 $KV cpdir /p /q